display: Add HDMI CEC HAL

Implement the spec as per
hardware/libhardware/include/hardware/hdmi_cec.h

Change-Id: I02e1ba9deee1007b7e5922c363b9f5d6c6ad82a9
diff --git a/libqservice/Android.mk b/libqservice/Android.mk
index 78b1d77..287e6ce 100644
--- a/libqservice/Android.mk
+++ b/libqservice/Android.mk
@@ -10,7 +10,8 @@
 LOCAL_ADDITIONAL_DEPENDENCIES := $(common_deps)
 LOCAL_SRC_FILES               := QService.cpp \
                                  IQService.cpp \
-                                 IQClient.cpp
+                                 IQClient.cpp \
+                                 IQHDMIClient.cpp
 LOCAL_COPY_HEADERS_TO         := $(common_header_export_path)
 LOCAL_COPY_HEADERS            := IQService.h \
                                  IQClient.h